Home / 20,594.34-28,420.20-11,162.88

Finding the Fourth Proportional to 20,594.34, 28,420.20 and 11,162.88

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Solution

The fourth proportional to 20,594.34, 28,420.20 and 11,162.88 is: 15,404.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,594.34 : 28,420.20 = 11,162.88 : x
  2. Step 2: Convert to fraction form
    20,594.34/28,420.20 = 11,162.88/x
  3. Step 3: Cross multiply
    20,594.34x = 28,420.20 × 11,162.88
  4. Step 4: Simplify right side
    20,594.34x = 317,251,282.18
  5. Step 5: Solve for x
    x = 317,251,282.18/20,594.34
  6. Step 6: Final answer
    x = 15,404.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.